It's the "nicest grass" in our mowed area, being upright, NOT climbing or tunneling over or under barriers, soft, & bright green (among bahiagrass & several hideous vine-grasses like Bermuda, St. Augustine, torpedo/wiregrass, all of which make a poor excuse for a lawn, visually and functionally,) but not a plant that is sold or cultivated as "lawn."
10 minutes of pulling should get rid of what you can see above ground in that tiny spot, but even if you think you pulled all of the roots, you probably can't, some will break & remain in the soil. Pull when you see, often enough that it can't make new seeds & you should get control very soon.